Processing method for thin paint film enamelled flat wire

Abstract

The invention discloses a processing method for a thin paint film enamelled flat wire, which comprises the following steps: setting out a copper wire; performing softness treatment on the copper wire; performing four passes of paint mould scraping lacquering treatment on the processed copper wire by using an enamelled wire paint moveable die; baking the copper wire subjected to lacquering treatment; and winding up a finished product to obtain the thin paint film enamelled flat wire. The method changes the mode of ten passes of paint mould scraping lacquering baking into the four passes of the paint mould scraping lacquering baking. The enamelled flat wire obtained by the method has high insulation level, can effectively reduce the number of wrapping layers of insulation paper and has good head dissipation effect.

Description

technical field [0001] The invention relates to a kind of electric power equipment, in particular to a processing method of a thin enamelled enamelled flat wire used for a transformer. Background technique [0002] At present, the paper-wrapped winding wires used in domestic large and medium-sized transformers are all made of single or multiple bare copper flat wires wrapped with insulating paper. In order to meet the insulation requirements of high-level voltage, the number of layers of outsourcing insulating paper is often more, which leads to poor heat dissipation performance of the paper-wrapped winding wire; and the outer dimension of the paper-wrapped winding wire is larger. There is also a plan to use ordinary enamelled flat wires, that is, enameled flat wires with a paint film thickness of 0.08~0.12mm instead of bare copper flat wires. Although the insulation effect meets the standard, the thickness of the paint film is less than the thickness of a single insulating ...

AI Technical Summary

Problems solved by technology

In order to meet the insulation requirements of high-level voltage, the number of layers of outer-wrapped insulating paper is often more, which leads to poor heat dissipation performance of paper-wrapped winding wires; and the outer dimension of paper-wrapped wires is larger

There is also a plan to use ordinary enamelled flat wires, that is, enameled flat wires with a paint film thickness of 0.08~0.12mm instead of bare copper flat wires. Although the insulation effect meets the standard, the thickness of the paint film is less than the thickness of a single sheet of insulating paper. Larger, the heat dissipation performance is worse than that of insulating paper, and there is also the danger of insulating varnish degrading in the transformer oil and blocking the oil passage

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